In the fields, at the range or on the hunt, you can trust TulaAmmo to deliver a superior level of internal, external, and terminal ballistics, more consistent velocities and impressive retained energies downrange from your favorite rifle, with an unmatched value-to-performance ratio. All TulaAmmo rifle cartridges are steel cased, zinc jacketed, non-corrosive Berdan primed, with a phosphate polymer coating and a lead core. Shooting Accuracy- more uniform and consistent jacket delivers up to 15% better shooting accuracy than standard bimetal bullets. Corrosion Resistance- Zinc jacket doesn't change in appearance over time and is proven to inhibit electrochemical corrosion Mfg: Tula Ammo